Carburetor



.Juiy 22, 1930. J. R, SHANNON Er AL l1,771,357

CRBURETOR Filed Aug. 18, 1928 clRglunjlon Patented July 22, 1930 2 UNITEDs'rAn-:s PATENro-FF-icef -,;`JOHNR; SHANNON AND OMER A; Asn.,` or DOUGLAS, ARIZONA; SAID AsH AssicfrNoRlcro"` A mi sAin SHANNON f OARBURETOR Y 'Application fiiedinigust 18.1928'. lserial No. $015,486. y

l "'lhis invention ,l relates to carburetors of that character whereinv air heatedrby the exhaustpipe of the engine is drawn over a bodyi of fuel oil or gasoline to become carburetted thereby and is drawn into the engine uponi' the suction stroke thereof.

The general object of the presentinven-- tion is to provide a simple, effective and easilyV applied device of this character which em-`4 bodies a U-shaped oil containing'pipe having means permitting the collection of fuelin" the lowest portion of the pipe and to provide 1 means whereby air heated by Vcontact with f theexhaust pipe of the engine may be diair,'after passing through-a Screen, isv` carried from the mixing chamber.

Our 4invention is illustrated in theaccomn* y panying drawings wherein- The vfigure is a longitudinal sectional diagrammatic view of our improved carburetor.

Referring to these drawings, 10 des ignates an approximately U-shaped pipe having up wardly extending extremities and a depressed middle portion. Thismiddle port-ion is de-` pressed below the level of the ends of the pipe to constitute a basin, as it may be termed,`

designated 11, adapted to hold a certain amount of fuel oil 12.` This depressedpori tion 11 is connected by a pipe 13 to a-ffioat valve casiiiglll which, in turn is connected by a iitting 15 to a source of supply. The pipe- 13 has operating init the iiow cont-rolling valve 16 which may be a needle valve or any other suitable construction, the float main-- taining a constant level of oil withinthe pipe 10. c

The pipe 10 of this pipe 17 isformed with slots 19 permitting of thefentrance of air 'which has beenheated by contact with `the exhaust *or manifold 18. The pipe 17 is connected tothe pipe 10m any suitable joint or coupling.

Thecpposite end-fof pipe'` 10 fromgthe hot .airinlet pipe-17 is enlarged so as to" form an approximately. globular mixing chamber 2O l which is connected bya coupling 21to an inverted Ushaped` pipe 22.` A "cylindrical screen 23 forms a continuationof the pipe '22 and is disposed within-the mixing chamber The pipe 22'is connected byfa coupling Qto an intakelpipe 25 or distributon' which at a plurality of points is connected bypipes 2 6 to thel intalie manifold 27 ofthe engine. 3,

These pipes 26 are to be disposed as closely adjacentthe intakefportsof the, several cylinders asypossible, and the. distributor pipe 25`lshould be disposedrelatively adjacent" to the intake manifold.` y l Vlhiscarburetor is particularly designed for "use with he'avyffoil and is also particularly adapted for use with motors having four,`six,

or eight cylinders.` Theinotor Will besta-rted with gasoline andas hot air is drawn through the carburetor the gasoline (will be .shut off and themotor will develop its power from the heavyoil alone.V The hotair entering through the hot air pipe 17 vaporizes the y oil on the surface vof theoilcollectedin the Ushaped pipe 10. This vapor is lifted into 'the mixingchamber where the agitationto whichthe vapor is subjected on a suction stroke, tends to more thoroughly mixthe air y with `the particles of vapor *and more thor .-'oughly carburet 'the air, andl as before stated, ythe distributing pipe 25`is connected as close lto the cylinder as possible, "even into'lthe intake chamber between the valves in the motor.`

` l This carburetor has been tried" out and has proved to be Vvery `efficient and operates" at relativelyn lowY cost. `It may be A easily ,applied to any motor and will save fuel, andsecure .morewpower than withfthe VordinaryA carburetting device. i ,The: screen 23fpreventsV av portion of the oil frombeing-` carried over into thexmotor,.

1 This device is tobe 'clampedto ei exhaust pipe; of the motorlfandabout Oneihtliblespoon ,of Oil is maintained inthe bottom of the pipe With the exhaust pipe and on the suction stroke the suction tends to draw oil inter- Y mingled with the air against the screen 23. The hot air and the vapor frOlll the oil are pipe being adapted to rest upon the exhaust manifold of an engine and take air from the immediate vicinity of the exhaust manifold, the opposite end of the first named pipe being formed With ar mixing chamber, a distributor adapted to be engaged Withthe insplashed .against this screen and very'finely ,take manifold of ani engine, Van inverted U- subdivided, atomi'zed and intermingled. The contracted passage between the surface" of-:the oil 12 and-the-uppervvall ofltlie pipev l securesV Vsuch a suction in this part of the pipe as is necessary in order to lift the relatively heavy' oil.V By forming the device of three approximately U-shaped sections of pipe the device may be readily adjusted to' suit different makes of Scars and exhaustpipes,

andthe pipe 17V may bgereadilyrotated in a horizontal planeat `right anglesto the axis of the inlet mouthof the U-sliaped pipe l() so thatthis pipe A1"( may be adjusted to fit any 1makeor locationof exhaust pipe.

shaped pipe connection extending from the distributor to said mixing chamber and having rotatively ustable connection 'there- .With,and a screen forming an extension of the last named pipe and extending into the mixing chamber.

In testimony whereof We hereunto aiiix our signatures.

JOHN R. -SHANNON.

'OMER A. ASH.

1.,A carb u retor ofthe character described Y Y including ,an approximately U-shaped pipe having means foranaintaining a depth of fuel oilin thelowest portion of said pipe, a hot air pipe rotatably connectedto one leg of the vU-shaped pipe ,and havingthe form of an inverted U, the outerend Iof thehot Lair pipe v`foldof an engine and take air. fromthespace Vbeing adapted torest upon the exhaust maniimmediately `adjacent theexhaust.manifold,k the opposite end of the first named pipebeing formed With a mixing chamber,a distributor havin'gmeans vfor maintaining a depth offuelA oilin the lowest portion .of said .pipe, a hot air pipeconnected to one leg of the U- shaped pipe v and havingthe formI ofan inverted U,

Vthe outer end of Athe hot airfpipe being adapted to restmupfon the kexhaust manifold of an engine andtalie air from vthe space having :1 -plurality of` pipe connections j immediately adjacent the exhaust ,manifold i having .a v,plurality of pipeconnec-tons adaptedto be .engaged with the intake manifold ofan engine at ziplurality yof points, a

f 'mixing chamber, and@ SClreellQI-ming alle f tensin 0f thiaStamed-,pip and @tendine i into the mixing Chamber;

f the opposite end of the first named pipe being I formed with a mixing chamber, a distributor pipeconneetion from,thefdistributor to said I A;carburetor of the chaiacterjdes'cribed predetermined depth in the lowest-portion of' including anv approximately 'LJ-shaped pipe -'havinginea-iis for maintaining fuel oil at a an inverted '-U, the outer-end lofthe hot air 1 'efthe'U-shapedf pipe'and'naving the Lformof 

